...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >The mechanism of shear-band blocking in monolithic metallic glasses
【24h】

The mechanism of shear-band blocking in monolithic metallic glasses

机译：整体式金属玻璃中的剪切带阻塞机理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The catastrophic failure of shear bands along a dominant shear plane has fatally hampered wide potential applications of metallic glasses. In this study, the blocking of shear bands in monolithic metallic glasses was investigated using an atomic force microscope together with a nanoindenter. At sites of the interaction of two shear bands, if the height of the secondary band is less than that of the pre-existing primary one, the propagation of the secondary band will be blocked, which could lead to the stabilization of glasses. The mechanism of the blocking was explained from the gap of the driving energy between the interactive bands. In addition, from the acceleration of the decreasing rate of the shear offset, it's revealed that more energy can be dissipated at sites of the interaction. These quantitative results provide a mechanistic understanding on the propagation and suppression of shear bands at the nanoscale, as well as a theoretical base to design metallic glasses with promoted plasticity by suppressing the shear band instability.
机译：沿着主要剪切平面的剪切带的灾难性破坏严重地阻碍了金属玻璃的广泛潜在应用。在这项研究中，使用原子力显微镜和纳米压头研究了整体式金属玻璃中剪切带的阻塞。在两个剪切带相互作用的部位，如果次级带的高度小于预先存在的初级带的高度，则次级带的传播将受到阻碍，这可能导致玻璃的稳定性。从交互频带之间的驱动能量的差距解释了阻塞的机制。另外，从剪切偏移减小速率的加速中可以看出，更多的能量可以在相互作用的位置消散。这些定量结果提供了在纳米尺度上剪切带的传播和抑制的机械理解，以及通过抑制剪切带的不稳定性来设计具有增强的可塑性的金属玻璃的理论基础。

著录项

  • 来源
    《Materials Science and Engineering》 |2017年第4期|162-166|共5页
  • 作者

    D.P. Wang; B.A. Sun; M. Gao; Y. Yang; C.T. Liu;

  • 作者单位

    Centre for Advanced Structural Materials, Department of Mechanical and Bicmechanical Engineering, College of Science and Engineering, City University of Hong Kong, Hong Kong, China;

    Centre for Advanced Structural Materials, Department of Mechanical and Bicmechanical Engineering, College of Science and Engineering, City University of Hong Kong, Hong Kong, China;

    University of Wisconsin-Madison, Department of Materials Science and Engineering, 1509 University Ave., Madison, WI 53706, USA;

    Centre for Advanced Structural Materials, Department of Mechanical and Bicmechanical Engineering, College of Science and Engineering, City University of Hong Kong, Hong Kong, China;

    Centre for Advanced Structural Materials, Department of Mechanical and Bicmechanical Engineering, College of Science and Engineering, City University of Hong Kong, Hong Kong, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Metallic glass; Shear band; Atomic force microscope; Nanoindentation;

    机译：金属玻璃;剪切带;原子力显微镜;纳米压痕;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号